package com.netjava.dao.impl;

import java.sql.SQLException;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.HibernateException;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.Session;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.netjava.dao.IUserDAO;
import com.netjava.pojo.Product;
import com.netjava.pojo.User;

/**
 * A data access object (DAO) providing persistence and search support for User
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see com.netjava.pojo.User
 * @author MyEclipse Persistence Tools
 */

public class UserDAO extends HibernateDaoSupport implements IUserDAO {
	private static final Log log = LogFactory.getLog(UserDAO.class);
	// property constants
	public static final String USER_NAME = "userName";
	public static final String EMAIL = "email";
	public static final String USER_PHONE = "userPhone";
	public static final String SEX = "sex";
	public static final String USER_ADDRESS = "userAddress";
	public static final String TYPE = "type";
	public static final String PASSWORD = "password";
	public static final String OTHER1 = "other1";

	protected void initDao() {
		// do nothing
	}

	public void save(User user) {
		log.debug("saving User instance");
		try {
			getHibernateTemplate().save(user);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(User user) {
		log.debug("deleting User instance");
		try {
			getHibernateTemplate().delete(user);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public User findById(java.lang.Integer id) {
		log.debug("getting User instance with id: " + id);
		try {
			User instance = (User) getHibernateTemplate().get(
					"com.netjava.pojo.User", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(User instance) {
		log.debug("finding User instance by example");
		try {
			List results = getHibernateTemplate().findByExample(instance);
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding User instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from User as model where model."
					+ propertyName + "= ?";
			return getHibernateTemplate().find(queryString, value);
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByUserName(Object userName) {
		return findByProperty(USER_NAME, userName);
	}

	public List findByEmail(Object email) {
		return findByProperty(EMAIL, email);
	}

	public List findByUserPhone(Object userPhone) {
		return findByProperty(USER_PHONE, userPhone);
	}

	public List findBySex(Object sex) {
		return findByProperty(SEX, sex);
	}

	public List findByUserAddress(Object userAddress) {
		return findByProperty(USER_ADDRESS, userAddress);
	}

	public List findByType(Object type) {
		return findByProperty(TYPE, type);
	}

	public List findByPassword(Object password) {
		return findByProperty(PASSWORD, password);
	}

	public List findByOther1(Object other1) {
		return findByProperty(OTHER1, other1);
	}

	public List findAll() {
		log.debug("finding all User instances");
		try {
			String queryString = "from User";
			return getHibernateTemplate().find(queryString);
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public User merge(User detachedInstance) {
		log.debug("merging User instance");
		try {
			User result = (User) getHibernateTemplate().merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(User instance) {
		log.debug("attaching dirty User instance");
		try {
			getHibernateTemplate().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(User instance) {
		log.debug("attaching clean User instance");
		try {
			getHibernateTemplate().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static UserDAO getFromApplicationContext(ApplicationContext ctx) {
		return (UserDAO) ctx.getBean("UserDAO");
	}
	
	public List<User> getNumUsers(final Integer page,final Integer num){
    	List<User> list=(List<User>)this.getHibernateTemplate().execute(new HibernateCallback(){

			public Object doInHibernate(Session session)
					throws HibernateException, SQLException {
				String queryString="FROM com.netjava.pojo.User AS user WHERE user.type!=?";
				Query query=session.createQuery(queryString);
				query.setInteger(0, 0);
				query.setFirstResult((page-1)*num);
				query.setMaxResults(15);
				return query.list();
			}
    		
    	});
    	return list;
    }
	
}